01933 Area Code — Wellingborough, Rushden & Irthlingborough

01933 is the UK dialling code for Wellingborough in North Northamptonshire, also serving Rushden, Irthlingborough and Irchester, allocated by Ofcom under the National Telephone Numbering Plan. Our database has tracked 145 distinct 01933 numbers across 210 public lookups.

Quick facts

About the 01933 dialling code

01933 is the UK geographic dialling code for Wellingborough, allocated by Ofcom under the National Telephone Numbering Plan. It is used by landlines — and increasingly VoIP lines — registered to the Wellingborough area.

A full Wellingborough number is normally written as 01933 XXXXXX. You can dial the local part on its own from within the same area, or the full number from anywhere in the UK.

Because of UK number portability and internet calling, a 01933 number no longer guarantees the caller is physically in Wellingborough. Fraudsters also "spoof" local codes like 01933 so an unknown call looks like a nearby business or neighbour — so treat an unexpected call on what is actually said, not on the area code alone.

Map of the 01933 dialling area

The marker shows Wellingborough; the shaded circle is an approximate indication of the area the 01933 code serves — exact Ofcom charging-area boundaries are irregular and don't follow a neat radius.

Map data © OpenStreetMap contributors. View larger map

Areas typically served by 01933

Settlements in and around the Wellingborough dialling area that typically use 01933 numbers. Approximate — Ofcom charging-area boundaries don't follow town or county lines exactly, and properties near a boundary may take a neighbouring code.

Calling 01933 from abroad

From outside the UK, dial your international access prefix, then the UK country code 44, then 1933 (the area code without its leading zero) and the local number.

History of the 01933 code

The code was 0933 until PhONEday, 16 April 1995, when a "1" was inserted after the leading zero to create 01933.

In the letter-dialling era the code had the mnemonic WE3 — on an old rotary dial, the letters WE (from Wellingborough) sat on the same holes as the digits 933, so subscribers literally dialled the start of the town's name.

Top searched 01933 numbers

These are the 01933 numbers most-looked-up by visitors to our number checker. Click any number to see its full lookup page with risk-level, range holder, and community reports.

Is a call from 01933 safe?

Most 01933 calls are ordinary local calls from Wellingborough homes and businesses. The main risk to be aware of is "neighbour spoofing", where a scammer fakes a local 01933 prefix so you are more likely to answer. Never share bank details, passwords or one-time security codes with an unexpected caller, even when the number looks local — hang up and call the organisation back on a number you have verified yourself.

To call a 01933 (Wellingborough) number from outside the UK, drop the leading zero and dial +44 1933 followed by the local number.

Operators serving Wellingborough

These UK communications providers have been allocated 01933 number blocks by Ofcom. The number of blocks per operator gives a rough sense of how widely each provider serves this area.

Ofcom number ranges on 01933

Ofcom's National Numbering Plan lists 433 number blocks under 01933, of which 172 are allocated to 101 communications providers. The first allocated blocks are shown below — look up any full number with the number checker to see its exact range holder.

Showing 12 of 172 allocated blocks. Source: Ofcom telephone numbering data, updated weekly.

How to block and report 01933 spam calls

Block or report 01933

• You can block 01933 directly from your recent-calls list on iPhone or Android, and forward scam texts free to 7726.
• Scam or fraud calls should be reported to Action Fraud (0300 123 2040) or Police Scotland (101); persistent marketing calls to the ICO / TPS.

Full step-by-step instructions for every phone, network-level blocking and all UK reporting routes are in our guide: How to block and report unwanted calls in the UK.

Frequently asked questions about the 01933 code

Neighbouring dialling codes

Codes covering areas around Wellingborough — useful when a caller is nearby but outside the 01933 boundary.

Living in or moving to Wellingborough?

Our free postcode reports cover house prices, crime, broadband and schools for the districts around Wellingborough.

Check another UK number

Have the full 10- or 11-digit number? The UK Phone Number Checker shows the Ofcom range holder, risk level, and any community reports for that specific number.